<template>
    <div class="todo-header">
        <input type="text" placeholder="请输入你的任务名称，按回车键确认" @keyup.enter="add" />
    </div>
</template>

<script>
    import {
        nanoid
    } from 'nanoid'

    export default {
        name: 'Header',
        props: ['addList'],
        methods: {
            add(e) {
                let {
                    value
                } = e.target;
                if (!value.trim()) return alert('请不要输入空内容!!!')
                let list = {
                    id: nanoid(),
                    title: value,
                    done: false
                }
                let result = this.addList(list);
                if (!result) {
                    return false
                }
                e.target.value = ''
            }
        }
    }
</script>

<style scope>
    /*header*/
    .todo-header input {
        width: 560px;
        height: 28px;
        font-size: 14px;
        border: 1px solid #ccc;
        border-radius: 4px;
        padding: 4px 7px;
    }

    .todo-header input:focus {
        outline: none;
        border-color: rgba(82, 168, 236, 0.8);
        box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(82, 168, 236, 0.6);
    }
</style>